Finding the Third Proportional to 420,079.50 and 921,807

Step by Step Solution

1. Step 1: Write the proportion equation
   420,079.50 : 921,807 = 921,807 : x
2. Step 2: Convert to fraction form
   420,079.50/921,807 = 921,807/x
3. Step 3: Cross multiply
   420,079.50x = 921,807 × 921,807
4. Step 4: Simplify right side
   420,079.50x = 849,728,145,249
5. Step 5: Solve for x
   x = 849,728,145,249/420,079.50
6. Step 6: Final answer
   x = 2,022,779.37